20398713

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1\times {\mathrm{521}}^1$

素因数の和:976

約数の個数: 16

約数和(自身を含む): 28196352

約数和(自身を除く): 7797639

約数列:

[1, 3, 31, 93, 421, 521, 1263, 1563, 13051, 16151, 39153, 48453, 219341, 658023, 6799571, 20398713]

約数ペア:

[(1, 20398713), (3, 6799571), (31, 658023), (93, 219341), (421, 48453), (521, 39153), (1263, 16151), (1563, 13051)]